libsanitizer merge from upstream r250806.

libsanitizer/

2015-10-20  Maxim Ostapenko  <m.ostapenko@partner.samsung.com>

	* All source files: Merge from upstream r250806.
	* configure.ac (link_sanitizer_common): Add -lrt flag.
	* configure.tgt: Enable TSAN and LSAN for aarch64-linux targets.
	Set CXX_ABI_NEEDED=true for darwin.
	* asan/Makefile.am (asan_files): Add new files.
	(DEFS): Add DCAN_SANITIZE_UB=0 and remove unused and legacy
	DASAN_FLEXIBLE_MAPPING_AND_OFFSET=0.
	* asan/Makefile.in: Regenerate.
	* ubsan/Makefile.am (ubsan_files): Add new files.
	(DEFS): Add DCAN_SANITIZE_UB=1.
	(libubsan_la_LIBADD): Add -lc++abi if CXX_ABI_NEEDED is true.
	* ubsan/Makefile.in: Regenerate.
	* tsan/Makefile.am (tsan_files): Add new files.
	(DEFS): Add DCAN_SANITIZE_UB=0.
	* tsan/Makefile.in: Regenerate.
	* sanitizer_common/Makefile.am (sanitizer_common_files): Add new files.
	* sanitizer_common/Makefile.in: Regenerate.
	* asan/libtool-version: Bump the libasan SONAME.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@229111 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 21 insertions, 25 deletions

diff --git a/libsanitizer/sanitizer_common/sanitizer_libignore.cc b/libsanitizer/sanitizer_common/sanitizer_libignore.cc
index 9877d668658..021ca618d64 100644
--- a/libsanitizer/sanitizer_common/sanitizer_libignore.cc
+++ b/libsanitizer/sanitizer_common/sanitizer_libignore.cc
@@ -6,10 +6,12 @@
 //===----------------------------------------------------------------------===//
 
 #include "sanitizer_platform.h"
+
 #if SANITIZER_FREEBSD || SANITIZER_LINUX
 
 #include "sanitizer_libignore.h"
 #include "sanitizer_flags.h"
+#include "sanitizer_posix.h"
 #include "sanitizer_procmaps.h"
 
 namespace __sanitizer {
@@ -17,35 +19,29 @@ namespace __sanitizer {
 LibIgnore::LibIgnore(LinkerInitialized) {
 }
 
-void LibIgnore::Init(const SuppressionContext &supp) {
+void LibIgnore::AddIgnoredLibrary(const char *name_templ) {
   BlockingMutexLock lock(&mutex_);
-  CHECK_EQ(count_, 0);
-  const uptr n = supp.SuppressionCount();
-  for (uptr i = 0; i < n; i++) {
-    const Suppression *s = supp.SuppressionAt(i);
-    if (s->type != SuppressionLib)
-      continue;
-    if (count_ >= kMaxLibs) {
-      Report("%s: too many called_from_lib suppressions (max: %d)\n",
-             SanitizerToolName, kMaxLibs);
-      Die();
-    }
-    Lib *lib = &libs_[count_++];
-    lib->templ = internal_strdup(s->templ);
-    lib->name = 0;
-    lib->loaded = false;
+  if (count_ >= kMaxLibs) {
+    Report("%s: too many ignored libraries (max: %d)\n", SanitizerToolName,
+           kMaxLibs);
+    Die();
   }
+  Lib *lib = &libs_[count_++];
+  lib->templ = internal_strdup(name_templ);
+  lib->name = nullptr;
+  lib->real_name = nullptr;
+  lib->loaded = false;
 }
 
 void LibIgnore::OnLibraryLoaded(const char *name) {
   BlockingMutexLock lock(&mutex_);
   // Try to match suppressions with symlink target.
-  InternalScopedBuffer<char> buf(4096);
-  if (name != 0 && internal_readlink(name, buf.data(), buf.size() - 1) > 0 &&
-      buf.data()[0]) {
+  InternalScopedString buf(kMaxPathLength);
+  if (name && internal_readlink(name, buf.data(), buf.size() - 1) > 0 &&
+      buf[0]) {
     for (uptr i = 0; i < count_; i++) {
       Lib *lib = &libs_[i];
-      if (!lib->loaded && lib->real_name == 0 &&
+      if (!lib->loaded && (!lib->real_name) &&
           TemplateMatch(lib->templ, name))
         lib->real_name = internal_strdup(buf.data());
     }
@@ -53,7 +49,7 @@ void LibIgnore::OnLibraryLoaded(const char *name) {
 
   // Scan suppressions list and find newly loaded and unloaded libraries.
   MemoryMappingLayout proc_maps(/*cache_enabled*/false);
-  InternalScopedBuffer<char> module(4096);
+  InternalScopedString module(kMaxPathLength);
   for (uptr i = 0; i < count_; i++) {
     Lib *lib = &libs_[i];
     bool loaded = false;
@@ -63,7 +59,7 @@ void LibIgnore::OnLibraryLoaded(const char *name) {
       if ((prot & MemoryMappingLayout::kProtectionExecute) == 0)
         continue;
       if (TemplateMatch(lib->templ, module.data()) ||
-          (lib->real_name != 0 &&
+          (lib->real_name &&
           internal_strcmp(lib->real_name, module.data()) == 0)) {
         if (loaded) {
           Report("%s: called_from_lib suppression '%s' is matched against"
@@ -96,9 +92,9 @@ void LibIgnore::OnLibraryLoaded(const char *name) {
 }
 
 void LibIgnore::OnLibraryUnloaded() {
-  OnLibraryLoaded(0);
+  OnLibraryLoaded(nullptr);
 }
 
-}  // namespace __sanitizer
+} // namespace __sanitizer
 
-#endif  // #if SANITIZER_FREEBSD || SANITIZER_LINUX
+#endif // #if SANITIZER_FREEBSD || SANITIZER_LINUX